C# Program to Print Right Triangle, Half Pyramid Pattern

C# programs to print the half pyramid pattern have been given here. Both the right half and left half of the pyramid using *, numbers and letters have been covered.

Page content(s):

1. Program & Output: Right half pyramid

 1.1. Using *

 1.2. Using numbers

 1.3. Using alphabets

2. Program & Output: Left half pyramid

 2.1. Using *

 2.2. Using numbers

 2.3. Using alphabets

3. Program & Output: Inverted half pyramid

 3.1. Using *

 3.2. Using numbers

 3.3. Using alphabets

1. Program & output to print the right half pyramid pattern

1.1. C# Program & output to print the right half pyramid pattern using *

Code has been copied

/*****************************
  	alphabetacoder.com
C# Program to print the right
half pyramid pattern using *
******************************/

using System;

namespace RightHalfPyramid {
    class Program {
        static void Main(string[] args) {
            // declare variables
            int row, i, j;

            // take input
            Console.Write("Enter the number of rows: ");
            row = Convert.ToInt32(Console.ReadLine());

            // new line
            Console.WriteLine("");

            // display the pattern
            for (i = 1; i <= row; i++) {
                // print *
                for (j = 1; j <= i; j++) {
                    Console.Write("*");
                }
                // new line
                Console.WriteLine("");
            }
        }
    }
}

Output

Enter the number of rows: 6

*

**

***

****

*****

******

1.2. C# Program & output to print the right half pyramid pattern using numbers

Code has been copied

/*********************************
  	alphabetacoder.com
C# Program to print the right
half pyramid pattern using numbers
**********************************/

using System;

namespace RightHalfPyramid {
    class Program {
        static void Main(string[] args) {
            // declare variables
            int row, i, j;

            // take input
            Console.Write("Enter the number of rows: ");
            row = Convert.ToInt32(Console.ReadLine());

            // new line
            Console.WriteLine("");

            // display the pattern
            for (i = 1; i <= row; i++) {
                // print numbers
                for (j = 1; j <= i; j++) {
                    Console.Write(j + " ");
                }
                // new line
                Console.WriteLine("");
            }
        }
    }
}

Output

Enter the number of rows: 6

1

1 2

1 2 3

1 2 3 4

1 2 3 4 5

1 2 3 4 5 6

1.3. C# Program & output to print the right half pyramid pattern using alphabets

Code has been copied

/***********************************
       alphabetacoder.com
C# Program to print the right
half pyramid pattern using alphabets
************************************/

using System;

namespace RightHalfPyramid {
    class Program {
        static void Main(string[] args) {
            // declare variables
            int row, i, j;

            // take input
            Console.Write("Enter the number of rows: ");
            row = Convert.ToInt32(Console.ReadLine());

            // new line
            Console.WriteLine("");

            // display the pattern
            for (i = 1; i <= row; i++) {
                // print letters
                for (j = 1; j <= i; j++) {
                    Console.Write((char)(j + 64) + " ");
                }
                // new line
                Console.WriteLine("");
            }
        }
    }
}

Output

Enter the number of rows: 6

A

A B

A B C

A B C D

A B C D E

A B C D E F

2. Program & output to print the left half pyramid pattern

2.1. C# Program & output to print the left half pyramid pattern using *

Code has been copied

/********************************
    alphabetacoder.com
C# Program to print the left half
of the pyramid pattern using *
*********************************/

using System;

namespace LeftHalfPyramid {
    class Program {
        static void Main(string[] args) {
            // declare variables
            int row, i, j;

            // take input
            Console.Write("Enter the number of rows: ");
            row = Convert.ToInt32(Console.ReadLine());

            // new line
            Console.WriteLine("");

            // display the pattern
            for (i = 1; i <= row; i++) {
                // print space
                for (j = 1; j <= row - i; j++) {
                    Console.Write(" ");
                }
                // print *
                for (j = 1; j <= i; j++) {
                    Console.Write("*");
                }
                // new line
                Console.WriteLine("");
            }
        }
    }
}

Output

Enter the number of rows: 6

     *

    **

   ***

  ****

 *****

******

2.2. C# Program & output to print the left half pyramid pattern using numbers

Code has been copied

/***********************************
    	alphabetacoder.com
C# Program to print the left half
of the pyramid pattern using numbers
************************************/

using System;

namespace LeftHalfPyramid {
    class Program {
        static void Main(string[] args) {
            // declare variables
            int row, i, j;

            // take input
            Console.Write("Enter the number of rows: ");
            row = Convert.ToInt32(Console.ReadLine());

            // new line
            Console.WriteLine("");

            // display the pattern
            for (i = 1; i <= row; i++) {
                // print space
                for (j = 1; j <= 2 * (row - i); j++) {
                    Console.Write(" ");
                }
                // print numbers
                for (j = 1; j <= i; j++) {
                    Console.Write(j + " ");
                }
                // new line
                Console.WriteLine("");
            }
        }
    }
}

Output

Enter the number of rows: 5

        1

      1 2

    1 2 3

  1 2 3 4

1 2 3 4 5

2.3. C# Program & output to print the left half pyramid pattern using alphabets

Code has been copied

/*************************************
    	alphabetacoder.com
C# Program to print the left half
of the pyramid pattern using alphabets
**************************************/

using System;

namespace LeftHalfPyramid {
    class Program {
        static void Main(string[] args) {
            // declare variables
            int row, i, j;

            // take input
            Console.Write("Enter the number of rows: ");
            row = Convert.ToInt32(Console.ReadLine());

            // new line
            Console.WriteLine("");

            // display the pattern
            for (i = 1; i <= row; i++) {
                // print space
                for (j = 1; j <= 2 * (row - i); j++) {
                    Console.Write(" ");
                }
                // print letters
                for (j = 1; j <= i; j++) {
                    Console.Write((char)(j + 64) + " ");
                }
                // new line
                Console.WriteLine("");
            }
        }
    }
}

Output

Enter the number of rows: 5

        A

      A B

    A B C

  A B C D

A B C D E

3. Program & output to print the right half pyramid pattern

3.1. C# Program & output to print the inverted half pyramid pattern using *

Code has been copied

/******************************
  	alphabetacoder.com
C# Program to print the inverted
half pyramid pattern using *
*******************************/

using System;

namespace InvertedHalfPyramid {
    class Program {
        static void Main(string[] args) {
            // declare variables
            int row, i, j;

            // take input
            Console.Write("Enter the number of rows: ");
            row = Convert.ToInt32(Console.ReadLine());

            // new line
            Console.WriteLine("");

            // display the pattern
            for (i = 1; i <= row; i++) {
                // print *
                for (j = row; j >= i; j--) {
                    Console.Write("*");
                }
                // new line
                Console.WriteLine("");
            }
        }
    }
}

Output

Enter the number of rows: 6

******

*****

****

***

**

*

3.2. C# Program & output to print the inverted half pyramid pattern using numbers

Code has been copied

/*********************************
  	alphabetacoder.com
C# Program to print the inverted
half pyramid pattern using numbers
**********************************/

using System;

namespace InvertedHalfPyramid {
    class Program {
        static void Main(string[] args) {
            // declare variables
            int row, i, j;

            // take input
            Console.Write("Enter the number of rows: ");
            row = Convert.ToInt32(Console.ReadLine());

            // new line
            Console.WriteLine("");

            // display the pattern
            for (i = 1; i <= row; i++) {
                // print numbers
                for (j = row; j >= i; j--) {
                    Console.Write((row - j + 1) + " ");
                }
                // new line
                Console.WriteLine("");
            }
        }
    }
}

Output

Enter the number of rows: 6

1 2 3 4 5 6

1 2 3 4 5

1 2 3 4

1 2 3

1 2

1

3.3. C# Program & output to print the inverted half pyramid pattern using alphabets

Code has been copied

/***********************************
  	alphabetacoder.com
C# Program to print the inverted
half pyramid pattern using alphabets
************************************/

using System;

namespace InvertedHalfPyramid {
    class Program {
        static void Main(string[] args) {
            // declare variables
            int row, i, j;

            // take input
            Console.Write("Enter the number of rows: ");
            row = Convert.ToInt32(Console.ReadLine());

            // new line
            Console.WriteLine("");

            // display the pattern
            for (i = 1; i <= row; i++) {
                // print letters
                for (j = row; j >= i; j--) {
                    Console.Write((char)(row - j + 65) + " ");
                }
                // new line
                Console.WriteLine("");
            }
        }
    }
}

Output

Enter the number of rows: 6

A B C D E F

A B C D E

A B C D

A B C

A B

A